I have a 94' F150 300 manuel 4x4 long bed, and I need to know what is the bearing that mounts to the underside of the truck in between the the 2 rear drive shafts? And what is the little shaft the goes on the rear drive shaft and up to that bearing? Because I have to replace all that, I can wiggle the shafts about 1/2-3/4" around

 

the bearing is called a "coupling shaft support bracket center bearing" and the little shaft is the "slip yoke".

 

As defined at the parts store, driveshaft center support bearing.

 

Thanks guys, will go over tomorrow and get the stuff.

 

i changed my center support bearing about 6 weeks ago.... it was squeaking ... it was damn hard to get off too...

 

Another name for the center support bearing is Hangar bearing. And yes, it can or wil be a challenge to remove from the shaft. Hope a torch or impact hammer is available. Wear gloves and eye protection!

 

Does the new bearning have to be pressed back on?

 

I had to do mine every few months until I made a bracket to hold the bearing in the rubber. The rubber would tear up on mine so after the first time I only changed the rubber. If the rubber is all that is bad on yours then you can just change that. Now when I did install the bearing I had to drive the old one off and drive the new one on. I suppose you could have it pressed on but you can still do it with a hammer. Watch where you put whatever you use to tap it on, like a solid shaft that you hit with the hammer. Put it where it won't deform the bearing case, like on the center race. The race is hardened so it is hard to damage. Getting the old one off will be harder than putting the new one on. Pay attention to the spacers on the driveshaft so it goes back together the same way.

 

What kind of bolts are the ones that bold the rear shaft to the rear diff? I tried the Torx but they don't fit.

 

if its like the ones i have seen it has a 12 point head on it. you have to use a 12 point wrench or socket. 13mm or 1/2" if i recall